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Differentiation of Subendocardial and Transmural Infarction Using Two-Dimensional Strain Rate Imaging to Assess Short-Axis and Long-Axis Myocardial Function

University of Queensland, Brisbane, Australia

View larger version (76K): [in this window] [in a new window] [Download PPT slide]   Figure 1 Short-axis circumferential strain curves.

View larger version (24K): [in this window] [in a new window] [Download PPT slide]   Figure 2 Resting (A) circumferential strain (S) and (B) strain rate (SR) versus transmural extent of infarction (TME). For panel A: *p = NS versus control or TME 0%; p < 0.0001 versus control; p = 0.02 versus TME 1% to 25%; p < 0.001 versus TME 1% to 25%; ||p = 0.01 versus TME 26% to 50%. For panel B: *p = NS versus control or TME 0%; p = 0.01 versus control; p < 0.0001 versus control; p = 0.02 versus TME 1% to 25%; ||p = 0.005 versus TME 0%.

View larger version (19K): [in this window] [in a new window] [Download PPT slide]   Figure 3 Resting radial strain (S) versus transmural extent of infarction (TME). *p = NS versus control or TME 0%; p = 0.005 versus control.

View larger version (23K): [in this window] [in a new window] [Download PPT slide]   Figure 4 Resting longitudinal strain (S) and strain rate (SR) versus transmural extent of infarction (TME). For panel A: *p< 0.0001 versus control; p = 0.05 versus TME 0%; p < 0.0001 versus TME 0%. For panel B: *p = NS versus control; p < 0.01 versus control; p = NS versus TME 1% to 25% or TME 26% to 50%.